An error about "invalid frame-counter"

When frequently calling the restful API to send data to the node device (send a packet at 10s), it may cause continuous errors. The log is as follows:
2019-12-11 15:55:29 {“applicationID”:“1”,“applicationName”:“lora-application”,“deviceName”:“LORA-LED16”,“devEUI”:“485400000d000006”,“type”:“DEVICE_QUEUE_ITEM_FCNT”,“error”:“invalid frame-counter”,“fCnt”:688}

  • We have made the following checks:
    LoRa Server Version is 2.8.1
    Disable frame-counter validation is checked in the device configuration

I look forward to your help